Download or read book Spruce fir Management and Spruce Budworm written by Society of American Foresters. Region VI. Technical Conference and published by . This book was released on 1985 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report NE written by and published by . This book was released on 1980 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Programs for computer simulation of a crosscut first furniture rough mill written by R. Bruce Anderson and published by . This book was released on 1985 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forestry Pesticide Aerial Spraying written by J.J. Picot and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduced to the technical aspects of forestry aerial spraying in the mid-1970's, we were immediately impressed by the complexity of the process of delivering pesticide to foliage. At that time, there was a vigorous public debate in New Brunswick about the ecological and public h~alth impacts of the annual spray program for the control of defoliation of spruce and fir trees by the spruce budworm. The forest industry is important to the province and changes to the established procedures of budworm control could have major economic implications. A rational debate required reliable information about the mechanics of the spraying process. There was a need to supply missing information as to required pesticide application rates, atomizer performance, off-target drift and deposit, and the effects of weather and aircraft operating factors. We were invited to initiate a research program in this domain by New Brunswick forest management officials, and what follows in this book is a logical and quantitative description of the overall process based on our own research and that of others over the intervening years. After a short introduction to aerial spraying, we begin (Chapter 2) by describing forest stands in terms of their interaction with suspended atmospheric particulate material carried along by the wind and susceptible to deposition on foliage. We introduce foliage simulators and their use in measuring the deposit of sprayed pesticide on foliage, the "biological interface" between pest and pesticide.

Download or read book Report written by Canada. Forest Entomology and Pathology Branch and published by . This book was released on 1961 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Forest Service Research Paper RM written by Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.) and published by . This book was released on 1967 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book USDA Forest Service Research Paper RM written by Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.) and published by . This book was released on 1968 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Information Report written by and published by . This book was released on 1985 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Effects of Nuclear War written by G. M. Woodwell and published by . This book was released on 1963 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Special Scientific Report written by and published by . This book was released on 1966 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spruce Budworms Bibliography written by Maine Agricultural Experiment Station and published by . This book was released on 1982 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Our Native Bees written by Paige Embry and published by Timber Press. This book was released on 2018-02-07 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: A New York Times 2018 Holiday Gift Selection Honey bees get all the press, but the fascinating story of North America’s native bees—endangered species essential to our ecosystems and food supplies—is just as crucial. Through interviews with farmers, gardeners, scientists, and bee experts, Our Native Bees explores the importance of native bees and focuses on why they play a key role in gardening and agriculture. The people and stories are compelling: Paige Embry goes on a bee hunt with the world expert on the likely extinct Franklin’s bumble bee, raises blue orchard bees in her refrigerator, and learns about an organization that turns the out-of-play areas in golf courses into pollinator habitats. Our Native Bees is a fascinating, must-read for fans of natural history and science and anyone curious about bees.

Download or read book Biological Insect Pest Suppression written by H. C. Coppel and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject area embraced by the term "biological control" in its classical sense is very broad indeed. The term itself was apparently first used in 1919 by the late Harry S. Smith, and was then used specifically in reference to the suppression of insect populations by the actions of their indigenous or introduced natural enemies. The California school of biological control specialists who followed in Smith's footsteps have traditionally differentiated "natural" biological control (by indigenous natural enemies) and "applied" biological control (by man-introduced natural enemies). Subsequently, the philosophy broadened beyond the original narrow concern with population suppression of insects (and especially pest insects), to embrace directed activities against mites or other arthropod pests, various invertebrate and vertebrate pests, weeds, and organisms producing disease in humans or their domestic animals and plants. The techniques used in these activities also multiplied beyond the original concern with natural enemies. The subjects area discussed in this book is, at the same time, broader and more restricted than that covered in other books on "biological control. " On the one hand, the treatment here is restrictive in that, with rare exception, we have limited ourselves to dealing only with ideas and examples involving the suppression of insect pests through human activity or intervention in the environment.

Download or read book Protection Strategy against Spruce Budworm written by David A. MacLean and published by MDPI. This book was released on 2020-01-15 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spruce budworm (Choristoneura fumiferana (Clem.)) outbreaks are a dominant natural disturbance in the forests of Canada and northeastern USA. Widespread, severe defoliation by this native insect results in large-scale mortality and growth reductions of spruce (Picea sp.) and balsam fir (Abies balsamea (L.) Mill.) forests, and largely determines future age–class structure and productivity. The last major spruce budworm outbreak defoliated over 58 million hectares in the 1970s–1980s, and caused 32–43 million m3/year of timber volume losses from 1978 to 1987, in Canada. Management to deal with spruce budworm outbreaks has emphasized forest protection, spraying registered insecticides to prevent defoliation and keep trees alive. Other tactics can include salvage harvesting, altering harvest schedules to remove the most susceptible stands, or reducing future susceptibility by planting or thinning. Chemical insecticides are no longer used, and protection strategies use biological insecticides Bacillus thuringiensis (B.t.) or tebufenozide, a specific insect growth regulator. Over the last five years, a $30 million research project has tested another possible management tactic, termed an ‘early intervention strategy’, aimed at area-wide management of spruce budworm populations. This includes intensive monitoring to detect ‘hot spots’ of rising budworm populations before defoliation occurs, targeted insecticide treatment to prevent spread, and detailed research into target and non-target insect effects. The objective of this Special Issue is to compile the most recent research on protection strategies against spruce budworm. A series of papers will describe results and prospects for the use of an early intervention strategy in spruce budworm and other insect management.

Download or read book Pesticide Formulations and Application Systems written by Loren E. Bode and published by ASTM International. This book was released on 1992 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation The proceedings of a symposium in San Antonio, Texas, November 1991. The 22 papers discuss the use of pesticides, in sections on safety and environmental impacts, characteristics of formulations and adjuvants, and application techniques and pest control. For engineers and chemists. Member price, $34. Annotation copyrighted by Book News, Inc., Portland, OR.

Download or read book Pesticides Documentation Bulletin written by and published by . This book was released on 1968 with total page 1088 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Library List written by National Agricultural Library (U.S.) and published by . This book was released on 1950 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: